1. CIS 375—Web App Dev II
SOAP

2. Introduction to SOAP What is SOAP (_________ Object Access Protocol)?
SOAP is a key element of Microsoft's .NET architecture
SOAP is a communication protocol
SOAP is for communication between applications
SOAP is a format for sending __________
SOAP is designed to communicate via Internet
SOAP is platform independent
SOAP is language independent
SOAP is based on _______
SOAP is simple and extensible
SOAP allows you to get around firewalls
SOAP will be developed as a _____ standard

3. SOAP Syntax
A SOAP message is an ordinary XML document containing the following elements:
A required __________ element that identifies it as a SOAP message
An optional _________ element that contains header information
A required ______ element that contains call and response information
An optional _______ element that provides information about errors that occurred while processing the message

4. Syntax Rules
All the elements above are declared in the default namespace for the SOAP envelope:
The default namespace for SOAP encoding and data types is:
Here is a good definition of a namespace.
A SOAP message
MUST be encoded using _____
MUST use the SOAP Envelope namespace
MUST use the SOAP Encoding namespace
must NOT contain a _____ reference
must NOT contain XML Processing Instructions

5. Skeleton SOAP Message <?xml version="1.0"?>
<soap:Envelope xmlns:soap=" soap:encodingStyle="
<soap:Header>
</soap:Header>
<soap:Body>
<soap:Fault>
</soap:Fault>
</soap:Body>
</soap:Envelope>

6. SOAP Envelope Element
The required SOAP Envelope element is the ______ element of a SOAP message.
A SOAP message must always have an Envelope element associated with the ____________ "
If a different namespace is used, the application must generate an error and ________ the message.
The SOAP encodingStyle attribute is used to define the data types used in the document.
This attribute may appear on any SOAP element, and it will apply to that element's contents and all ______ elements.

7. SOAP Header Element
The optional SOAP Header element contains application-specific information about the message.
If the Header element is present, it must be the first child element of the Envelope element.
All immediate child elements of the Header element must be namespace-qualified.
SOAP defines three attributes in the default namespace: actor, mustUnderstand, and ______________.
The attributes defined in the SOAP Header define how a recipient should process the SOAP message.

8. Sample Header Element
<soap:Header>
<m:Trans
xmlns:m=“
soap:actor="
soap:mustUnderstand="1">
234
</m:Trans>
</soap:Header>
The SOAP mustUnderstand attribute is used to indicate whether a header entry is mandatory or optional for the recipient to process.
The SOAP actor attribute may be used to address the Header element to a particular __________.

9. SOAP Body Element (1)
The SOAP Body element contains the actual SOAP message.
<?xml version="1.0"?>
<soap:Envelope xmlns:soap=" soap:encodingStyle="
<soap:Body>
<m:GetPrice xmlns:m="
<m:Item>Apples</m:Item>
</m:GetPrice>
</soap:Body>
</soap:Envelope>

10. SOAP Body Element (2) A SOAP response could look something like this:
<?xml version="1.0"?>
<soap:Envelope xmlns:soap=" soap:encodingStyle="
<soap:Body>
<m:GetPriceResponse xmlns:m="
<m:Price>1.90</m:Price>
</m:GetPriceResponse> </soap:Body>
</soap:Envelope>

11. SOAP Fault Element
An error message from a SOAP message is carried inside a Fault element.
If a Fault element is present, it must appear as a child element of the ______ element.
The SOAP Fault element has the following sub elements:
<faultcode> A code for identifying the fault
<faultstring> A human readable explanation of the fault
<faultactor> Information about who caused the fault
<detail> Holds application specific error information related to the Body element

12. SOAP HTTP Binding
After establishing a connection, the client can send an HTTP request message to the server:
POST /item HTTP/1.1
Host:
Content-Type: application/soap+xml; charset=utf-8
Content-Length: 300
The server then processes the request and sends an HTTP response back to the client.
200 OK
In the example above, the server returned a status code of 200. This is the standard success code for HTTP.